Riveting and pressing machine



2 Sheets-Sheet 1 (No Model.)

U. B. ALBREE;

RIVETING AND PRBSSING MACHINE.

No. 581,147. Patented Apr. 20-, 1897.

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( No Model.)

0. B. ALBREEI 2 Sheets Sheet 2.

RIVET-ING AND PRESSING MACHINE.

No. 581,147. Patented Apr. 20, 1897.

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PATENT Prion.

CHESTER B. ALBREE, 0F ALLEGHENY, PENNSYLVANIA.

RIVETING AND PRESSlNG MACHINE.

' SPECIFICATION forming part of Letters Patent No. 581,147, dated April 20, 1897. Application filed October 2, 1896- Serial No. 607,681. (No model.)

To all whom it may concern.-

Be it known that I, CHESTER B. ALBREE, of Allegheny, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Riveting and Pressing Machines, of which the following is a full, clear, and exact description.

My present invention is a modification of the riveting and pressing machine described and claimed in a prior patent, No. 558,140, granted to me on April 14, 1896. In that patent I show improved means for transmitting the power of a cylinder or other motor to the riveting or pressing tool or die, comprising a reciprocating roller or slide L, actuated by a motor N and bearing upon a moving part or lever F, which is connected with the moving tool or die and is inclined to the path of the roller or slide, so that in itsmotion it shall press thereon and thus force the moving die or tool toward its companion, there being a swinging arm K pivotally connected to the frame of the machine and connected also with said reciprocating slide or roller, so as to serve as a resistance-piece and to hold the same in working contact with said lever.

My apparatus herein shown embodies the principle of the mechanism of said patent, but differs from the construction illustrated in thedrawings thereof in that it is reversed, for in my present construction the part against which the reciprocating slide or roller bears and which corresponds to the lever F of said patent is held stationary, while the part of the apparatus to which the swinging arm is pivotally connected is left free to move and carries the moving tool or die, so that when the reciprocating slide or roller is projected its bearing against said fixed part, reacting through said swinging arm, will cause the motion of the tool necessary in the operation of the machine. In this case the surface against which the reciprocating slide or roller bears is not or need not be inclined to the resultant or actual path of the motion of the reciprocating roller or slide, though, as in the construction of the patent above referred to, it is and must be inclined to the effective path of motion, which is an arc whose radius is the swinging arm and whose center is the end of said arm remote from the sliding block or roller. I have found that by'th us modifying the construction of the apparatus I obtained important benefits, since I am enabled not only to retain the advantages recited in my said patent, but also to provide apparatus in whose use the tools can be inserted readily and to perform work in places which would be difficult to reach with other forms of machine.

In the accompanying drawings, Figure 1 shows my improvement in side elevation, and Fig. 2 is a similar view of a modified construction.

Referring to Fig. 1, 2 represents the stationary part of the machine-frame, carrying a stationary tool or die 3, which is a rivetingtool or a punching-tool, according to the nature of the work to be performed. The moving part 4 of the frame, which carries the moving die 6, is connected to the part 2 by a pivot 5 and in the operation of the machine moves pivotally on the axis 5, as indicated by dotted and full lines, so as to cause the approach or recession of the tools.

The cylinder 7 or other device by which the machine is actuated is mounted upon the stationary part 2, and when a cylinder is used, as shown in the drawings, it has a projecting plunger 8, carrying a slide or roller 9, traveling in contact with the surface 10 on the part 2. A swinging arm 11 is connected at one end with the plunger or with said slide or roller and at the other end with a projecting portion or standard of the movable part 4 of the machine. The apparatus being supported by the part 2,it is clear that if the reciprocating slide or roller 9 be projected the arm 11 will tend to cause it to describe a circular path of motion whose radius is said arm, but as the rollerbears against the surface 10 of the frame or part 2, which is stationary, the resultant force will move the end of the part 4 outwardly and will cause the approach of the dies. In like manner the retraction of the reciprocating slide or roller will cause the dies to separate.

The action of the apparatus is somewhat analogous in principle to the action of pivoted shears.

In the apparatus shown in Fig. 2 the parts of the machine 2 and 4, the stationaryand movable parts, respectively, are pivoted together at the end at 5 instead of being pivoted at a middle point, as in Fig. 1. The motor 7 is supported by the part 2, and its rcciprocating slide or roller 9, which bears upon the surface 10, has a swinging arm 11 pivotally connected at the outer end to a standard 13, projecting from the movable part 4. The dies 3 and 6 are set at the ends of the parts 2 and 4, respectively. \Vhen the slide or roller 9 is projected, its bearing upon the part 10 will cause the die 6 to approach the die 3, the apparatus being supported by or from the part 2.

It will be seen that by reason of the construction above described I am enabled, when desired, to construct the apparatus with projecting jaws or die-carrying portions, so that it can be inserted readily into places otherwise difficult of access. In riveting the beams of ships and like work this feature of the machine is one of special advantage.

Vithout limiting myself strictly to the precise construction which I have shown in the drawings, since this maybe modified in various ways by those skilled in the art, what I claim as new is 1. A riveting or pressing machine, having a stationary part and a moving part pivoted together by whose approach and separation the dies or tools are actuated, a reciprocating slide or roller bearing upon the stationary part in contact with a slide-surface thereon, a swinging arm connected with said slide or roller and with the moving part of the machine for holding the slide or roller toits work, and means for supporting the machine by or from the said stationary part.

2. A riveting or pressing machine having two parts, 2 and at, pivotally connected at 5, a motor on the part 2, a reciprocating part 9 in contact with the part 2, and an arm 11 connecting the part 4 with the reciprocating part 9.

In testimony whereof I have hereunto set my hand.

CHESTER B. ALBREE. \Vitnesscs:

G. I. HoLnsnIr, THOMAS W. UAKEWELL. 

